Catalyst regenerator and catalyst regeneration method

Abstract

A catalyst regenerator for regenerating a coked catalyst produced along with a olefin by mixing naphtha and a catalyst with each other to cause a naphtha cracking reaction, and falling from a cyclone which separates the coked catalyst and the olefin produced from the naphtha cracking reaction, includes: a vessel accommodating a catalyst layer formed by stacking the catalyst; a partial oxidation burner producing a high-temperature gas containing solid carbon; and supply nozzles connected to the partial oxidation burner, installed on a bottom of the vessel toward the falling catalyst and the catalyst layer, and spraying the high-temperature gas containing the solid carbon to the catalyst and the catalyst layer.

The invention claimed is: 
     
       1. A catalyst regenerator for regenerating a coked catalyst produced along with an olefin by mixing naphtha and a catalyst with each other to cause a naphtha cracking reaction, and falling from a cyclone which separates the coked catalyst and the olefin produced from the naphtha cracking reaction, comprising:
 a vessel accommodating a catalyst layer formed by stacking the coked catalyst; 
 a partial oxidation burner producing a high-temperature gas containing solid carbon; and 
 supply nozzles connected to the partial oxidation burner, arranged toward the coked catalyst, and spraying the high-temperature gas containing the solid carbon to the coked catalyst, 
 wherein the partial oxidation burner is a plasma burner partially oxidizing a hydrocarbon-based fuel oil. 
 
     
     
       2. The catalyst regenerator of  claim 1 , further comprising:
 a stand pipe inducing falling of the coked catalyst; and 
 a dispersing structure provided below the stand pipe and uniformly dispersing the coked catalyst in a circumferential direction. 
 
     
     
       3. The catalyst regenerator of  claim 2 , wherein:
 the dispersing structure 
 is formed in a conical shape to induce a uniform dispersion of the coked catalyst in the circumferential direction. 
 
     
     
       4. The catalyst regenerator of  claim 2 , wherein:
 the supply nozzles 
 are provided in a circular body disposed in the circumferential direction below and outside the dispersing structure. 
 
     
     
       5. The catalyst regenerator of  claim 2 , wherein:
 the supply nozzles 
 are provided in the dispersing structure.